A semiconductor laser driving device is mounted on an information recording and reproduction device, and is suitably used for recording and reproducing information. The semiconductor laser driving device includes: a semiconductor laser for emitting a laser light; and a temperature detection unit for detecting a temperature of the semiconductor laser. The semiconductor laser driving device changes the output of the laser light based on the detected temperature. Thus, the semiconductor laser driving unit can suitably improve response characteristics of the semiconductor laser, irrespective of the temperature of the semiconductor laser. Therefore, the semiconductor laser driving device can ensure recording performance onto an optical disc without being affected by the temperature of the semiconductor laser.